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Патент USA US2411615

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Nov. 26, 1946.
Filed March '7, 1945
BY 2 -
2 z)
Patented Nov. 2-6, 1946
- 2,411,615
Emil A. Dodelin, Moorestown, N. J.
Application March 7, 1945,. Serial No. 581,416
5 Claims. (Cl. 51'—185)'
ends with transverse grooves, its opposed faces
being either plane or curved as may be found most
desirable. At each end of the supporting mem
ber, there is provided on its side walls a pair of
cooperating ‘coil springs which rotatably carry a
roller for cooperation with the adjacent end
more particularly to a device for supporting a
strip or sheet of sandpaper, emery paper or cloth,
or the likefor use.
, The principal object of my invention is to pro
vide an improved device of this type which will ,
hold the abrasive sheet ?rmly in place.
More particularly, it is an object of my inven
like, two abrasive sheets may be applied, one. to
on which the abrasive sheet will. be held with a
tight fit at all times and from which the abrasive
each face, the opposed ends of the. two sheets be
ing. overlapped in the adjacent grooves and being
?rmly held therein by pressure of the associated ’
Another object of my invention isto provide an
improved abrasive device which can be held com
fortably in the hand of the user.‘
In this form of the invention, which is
especially useful for sharpening knives and the
tion to provide an improved abrasive sheet holder
sheet will not come loose during use.
elongated. supporting. member is- provided at both
This invention relates to abrasive devices, and,
Stillanother object of my invention’ is to. pro
videlan. improved abrasive-device which can be
The. novel features that I consider characteris
ti'cof my invention are set forth with particular
ity in the appended. claims. The invention itself,
however, both as to its organization and method
manipulated with great ease over relatively rough
‘ of operation, as Well as additional objects and ad
surfaces to render the same smooth and clean.
vantages thereof, will best beunderstood from the
-' A further. object of my invention is to provide 20. following description of two embodiments there
‘animprovedeabrasive device as aforesaidwhich
of, when read in connection with. the accompany
can be usedeffectively both along small‘ areas or
ing drawing, in which
spots. and in'corners, as well as along large, fully
Figure l is’ a perspective View of one form of
exposed areas.
abrasive device according to my invention,
1 It is also an object of my invention to provide as 7 FigureZi's a. side. elevation thereof'showing how
an‘i'mproved abrasive device as set forth above
the device may be used in corners,
which-is simple in construction, economical in
Figure 3 is a top-plan view thereof,
cost, and highly efficient in use,
Figure v4; is - a fragmentary, perspective view
In' accordance with one form of my invention,
thereof. showinghow ,this- form of my invention
I provide a supporting block which has one plane
may be used in, smoothing a spot or small area,
face. and. an‘ opposed face which is curved longi;
. Figure 5 isa ‘side elevation of another form of
tudmally at one end to meet theopposed, ‘plane
abrading device according to my invention, and
face along a transverse edge at this. end of the
‘Figure. 6 is a top, plan View of the latter form of
block. The block is also formed with a transverse
groove or seat at its other end. A pair of coil 35 myReferring.
more particularly to the drawing,
springs secured. to the opposed side walls of the ' wherein similar reference characters designate
block rotatably ‘carry a roller which they hold
‘corresponding parts throughout, there is shown,
tightly against the aforesaid seat.v When a sheet
inv Figures 1 to 4, a supporting block. I having. a
or strip of abrasive material is to be applied to
plane face. or surface la, an opposed face or sur
the block, the roller is removed from the afore
mentioned groove or seat, one end of the abrasive
sheet is placed against the groove, the sheet is y
face it» which is tapered by curving longitudinal
' ly at one end along a smooth curve lo and meets
the face la along a transverse. edge 2, and a pair
The other end of the block I,
whichmay be made of wood, metal, plastic, or any
other suitable material, is formed with a trans
verse groove 3 constituting, a seat for a roller 4.
The roller 4 is rotatably carried- by a pair of 00
then wrapped tightly around'the block and its op-y _ , of side walls id.
posite end placed against its ?rst mentioned end
in overlapping relation therewith, and the roller
is returnedto the groove.» The springs then' pull
the roller against the overlapped ends of the
abrasive sheet to hold the sheet ?rmly against the
operating coil springs 5 which are secured to the
block. The plane face of the block is useful in
side walls Id of the‘block.
treating plane surfaces, the curved portion is use-l
The block I is adapted to support a sheet 6 of
ful in rubbing spots or other small areas, and the
transverse edge is useful in corners. The block is
preferably of such size that it can be held com
fortably in the hand.
' . sandpaper, emery cloth or other suitable abrasive
material to render it easy to manipulate. When
the sheet 6 is to be applied to the supporting
According to another form of my invention, an 55 block I, the roller 4 is ?rst removed from the
groove 3 and is moved with its springs 5 to the
position A shown in Figure 2. This permits the
springs 5 to contract fully. One end portion
6a of the sheet 6 is then placed against the seat
or groove 3 and, while the portion 6a is held in
the groove 3 with the ?ngers, the sheet 6 is
forms of my invention in considerable detail, it
will be apparent to those skilled in the art that
many other forms thereof'are possible. I there
fore desire that my invention shall not be limited
except insofar as is made necessary by the prior
art and by the spirit of the appended claims.
wrapped tightly around the face la, the edge 2,
the curved portion lo and the face lb.
I claim as my invention:
1. An abrading device comprising a supporting
roller 4 is then brought down against the sheet
member having a groove at one end extending
6 along the edge ‘I of the block I as shown in the 10 transversely thereacross, ' said member being
position B of Figure 2. In this position, the
springs 5 are fully stretched and the roller there
adapted to have a sheet of abrasive material
fore exerts considerable pressure against the '
; _ ' placed thereon with at least one end of said sheet
in said groove, a pair of coil springs secured to
abrasive sheet and the block. The roller 4 is
said member on the sides thereof adjacent to
then rolled down along the end portion 8 of the 15 said grooved end thereof, and a roller rotatably
block I to the position C where it again seats in
carried by said springs for cooperation with said
the groove 3. In rolling down to the position
groove to releasably lock said sheet in said groove
C, the roller engages the opposite end portion 6b
under the in?uence of said springs.
of the sheet 6 and brings it into overlapping re
2. An abrading device comprising a block hav
lation with the end 6a against the groove 3, at 20 ing a groove at one end extending transversely
the same time tightening up any looseness that
thereacross, said block being adapted to have a
may be present in the sheet 6. In the position
sheet of abrasive material wrapped around it with
C, the springs 5 are contracted somewhat but
the end portions of said sheet in overlapped re
still exert great pull on the roller 4 wherefore
lation against said groove, a pair of coil springs
the roller exerts great pressure against the over
secured to said block on the sides thereof adja
lapping ends of the abrasive sheet and holds it
cent to said grooved end thereof, and a roller
?rmly and tightly thereon.
The block I is of such a size that it can be
held comfortably in the hand. When a large
area of work is to be rendered smooth, the plane -
face la or the somewhat shorter plane face lb
can be applied thereto. If the work includes a
corner, the corner can be reached easily by bring
ing the edge 2 thereagainst, as shown in Figure
2. Where a small area, such as a spot or the like, 0
is to be given particular or selective treatment,
for example, the block I may be turned over and
its curved portion lc applied thereto, as shown in
Figure 4.
In Figures 5 and 6, there is shown another
form of my invention in which the supporting
member is comprised of an elongated block ll
formed with opposed, plane faces Ila and l lb,
rotatably carried by said springs for cooperation
with said groove to releasably lock said overlap
ping sheet portions against said groove under the
in?uence of said springs.
3. An abrading device comprising a block hav
ing a longitudinally tapered surface at one end
thereof meeting the opposed surface along a
transverse edge, said block having a transversely
extending groove therein at its other end and
being adapted to have a sheet of abrasive ma
terial wrapped around it with an intermediate
portion of said, sheet bent around said trans
verse edge and the end portions of said sheet in
overlapped relation against said groove, a pair
of coil springs secured to said block on the sides
thereof and adjacent to said grooved end thereof,
and a roller rotatably carried by said springs for
cooperation with said groove to releasably lock
side walls Ho and a transverse groove l3 at each
end. Secured to the side walls at each end of 45 said overlapping sheet portions ?rmly against
the supporting member II are two pairs of op
said groove under the influence of said springs.
positely extending coil springs l5 which support
4. An abrading device according to claim 3
the rollers I4. An abrasive sheet Ilia of one type
wherein said longitudinally tapered surface is
or grade may be applied to the face Ha and a
formed along a smooth curve and wherein said
second abrasive sheet l?b of either the same type, 50 opposed surface is disposed in a plane.
grade, etc. or other suitable type or grade (for
5. An abrasive device comprising an elongated
example, ?ne emery cloth and coarse emery
supporting member provided with a transversely
cloth) may be applied to the face Ill). The ad
extending groove at each end, said member be
jacent ends of the two sheets [6a and lGb are
ing adapted to receive an elongated sheet of abra
?rst overlapped in one of the grooves l3 and the
sive material on each of its opposed faces with
associated roller I 4 is brought into‘engagement 55 the end portions of each of said sheets bent over
therewith after which the sheets l5a and Nib
the ends of said member and disposed against
are drawn tight, their other ends are brought
said groove, two pairs of opposed cooperating
into overlapping relation in the opposite groove
coil springs carried by said member on the oppo
3, and the second roller I4 is brought into its
site sides thereof adjacent‘to its ends, and a roller
groove l3 in a manner similar to that described 60 rotatably carried by each pair of said springs, one
with reference to the positions A, B and C of
of said rollers being adapted to cooperate with
Figure 2. The sheets Mia and liib are then held
one of said grooves and the other of said rollers
?rmly and tightly on the supporting member II
and the device is ready for use.
This form of
my invention is particularly useful for sharpen
ing knives and similar utensils.
Although I have shown and described two
being adapted to cooperate with the other of said
65 grooves to releasably lock the respective ends of.
said sheets in said grooves under the in?uence
of their respectively associated coil springs.
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